I have a 3 month old blue Sumatra/speckled Sussex mix. It was wing feather sexed at a day old and I thought it was a cockerel, but now I'm still not sure. I'm finally sure that it's a mix breed at least, but gender is still a question. If it was pure Sumatra, I'd say cockerel. If it was pure Sussex, I'd say pullet. But it looks so much like both now. The body feathers say pullet, the comb (same size as a similar aged Sumatra boy) and wing sexing say cockerel. And whatever it is, it's as sweet and tame as my Sussex hens. Thoughts?